Dr Challoner's High School 11 Plus: Catchment, Ofsted and 2025 Results

Dr Challoner's High School is the selective, all-girls Buckinghamshire grammar school in Little Chalfont — not to be confused with Dr Challoner's Grammar School, the boys' school roughly three miles away in Amersham. For 11 plus families weighing up an application, the two questions that matter most are rarely the ones most guides answer first: how does catchment and Pupil Premium priority actually work at this specific school, and is the school's own recently published performance data as strong as its reputation suggests? This page works through both in detail, together with the exact 2027-entry Secondary Transfer Test dates, the full November 2023 Ofsted breakdown by category, and what the Secondary Transfer Test itself actually assesses.

Is Dr Challoner's High School Realistic for Your Daughter? Start With the Catchment Map

Dr Challoner's High School admits 180 girls into Year 7 each September — a fixed Published Admission Number confirmed on the school's own admissions pages. That number matters more than most families realise, because reaching the qualifying Secondary Transfer Test score does not, on its own, secure a place. Buckinghamshire's grammar system works on a two-stage model: first you clear the county-wide qualifying score, then the school allocates its 180 places using its own oversubscription criteria if there are more qualifying applicants than spaces — which, at Dr Challoner's High School, there reliably are.

The school's published oversubscription criteria set out the exact order in which places are allocated once the qualifying score has been met:

1. Looked After or previously Looked After children
2. Students who live in the school's catchment area and qualify for Pupil Premium
3. Daughters of staff at Dr Challoner's High School
4. Students who live in the catchment area
5. Students who have a sister already at the school
6. Students who have exceptional medical or social needs

This ordering is the single most important document for any family assessing their realistic chances, because it means catchment residence outranks having a sister at the school, and catchment-plus-Pupil-Premium status outranks staff daughters and ordinary catchment residence alike. A child living outside the catchment area, with no sibling connection, is competing for whatever places remain after all six categories above have been satisfied — which, at a heavily oversubscribed Bucks grammar school, can mean very few places, or none, in a given year.

Dr Challoner's High School does not publish a definitive named list of catchment towns on its own website in the material we reviewed for this page. Third-party 11+ resources commonly cite the wider catchment as including Amersham, Chesham, Chalfont St Giles, Chalfont Common, Gerrards Cross, Great Missenden and Prestwood — but because that list comes from a competitor site rather than the school's own admissions policy, treat it as a general starting point rather than a confirmed boundary. If catchment status is central to your planning, the safest step is to check your specific address directly with Buckinghamshire Council or the school's admissions office rather than relying on any third-party list, including this one. You can browse our guides to other Buckinghamshire grammar schools if you're weighing up several options across the county.

Is Dr Challoner's High School the Same as Dr Challoner's Grammar School?

No — and the confusion is understandable, because the two schools share a founder's name, a Buckinghamshire home, and a shared history, but they have been entirely separate institutions since the 1960s. Dr Challoner's High School is the all-girls school in Little Chalfont; Dr Challoner's Grammar School is the boys' school in Amersham. If you are researching one, make sure you have not landed on the other school's page, catchment map or oversubscription policy by mistake — the two schools' catchments, dates, PANs and qualifying scores are not interchangeable, even though families often search for them together.

The High School's origin is a direct consequence of that older, originally mixed grammar school outgrowing its site. According to the school's own history page, pressure for more grammar school places in the district in the early 1960s led to the decision to build an entirely new school in Little Chalfont, solely for girls, so that the original Dr Challoner's Grammar School could revert to boys only. Dr Challoner's High School opened its doors on 11 September 1962 — while the building itself was still unfinished — and was formally, ceremonially opened by Princess Marina, Duchess of Kent, on 7 May 1964. A second, independently sourced government record corroborates the same founding story: the school was established in 1962 as an all-girls institution when the previously mixed Dr Challoner's Grammar School became all-boys. Two independently sourced accounts landing on the same narrative gives this history unusual confidence for a detail most competing pages skip entirely.

The Little Chalfont site has also been substantially reinvested in over the past decade. Over £5 million of government grants, combined with fundraising from 2017 onwards, funded a programme that delivered nine newly built, leading-edge classrooms and a new Sixth Form Centre — designed in large part by the school's own students — which opened in September 2022. For families weighing up the school's facilities against its exam results and Ofsted rating, this recent capital investment is a relevant, and rarely reported, data point.

What Did Ofsted Say About Dr Challoner's High School in November 2023?

Dr Challoner's High School was inspected by Ofsted on 21 November 2023, with the report published on 25 January 2024 (URN 137219). The overall outcome was Outstanding — and, distinctively, Outstanding in every one of the five individual sub-categories that make up a full Ofsted inspection, not just the headline grade:

Full-category Outstanding verdicts are relatively rare — many Outstanding-rated schools carry at least one "Good" sub-judgement pulling down the overall impression. None of the competitor pages we reviewed when researching this guide cited this category-by-category breakdown; most either didn't mention Ofsted at all or referenced the headline word "Outstanding" without a date, an inspection reference, or the individual category grades. You can read the full inspection report on Ofsted's own report portal.

What Are Dr Challoner's High School's 2025 GCSE and A-Level Results?

The school's 2025 GCSE results set a new school record. According to the school's own exam results page, 83% of all grades awarded to Dr Challoner's High School girls in 2025 were grade 7, 8 or 9 — six percentage points higher than the school's previous record, set in 2023, of 77%. Within that headline figure, 35% of all grades awarded were the top grade, 9.

At A-level, 2025 was also a record year: 56% of all A-level entries resulted in grades of A* or A — the highest proportion in the school's history — with 83% of all grades at A* to B, and 95% of grades at C or above. Combined with the November 2023 full-category Outstanding Ofsted verdict, this makes 2025 the strongest documented year in the school's recent public record — and it is a genuinely fresh data point. At the time of researching this page, none of the five ranking pages we reviewed had cited these 2025 figures.

When Is the 2027 Secondary Transfer Test, and What if You're Outside a Bucks Primary School?

For children moving up to secondary school in September 2027, Buckinghamshire Council has confirmed the Secondary Transfer Test dates as a practice test on 8 September 2026 and the main test on 10 September 2026. Most children attending a Buckinghamshire primary school sit both papers at their own school, with no separate registration required for the practice sitting.

Families outside Buckinghamshire — including those at independent prep schools, or living out of county — follow a slightly different route. Buckinghamshire Council will email a formal test invitation, with venue and arrangements, by 7 August of the year before entry. Missing that window, or not registering in time, is one of the most common and avoidable reasons out-of-county families lose the option to sit the test at all, so this date deserves a place on the calendar well before the September test dates themselves.

What Does the Secondary Transfer Test Actually Test at Dr Challoner's High School?

Dr Challoner's High School, in common with the other Buckinghamshire grammar schools, uses the countywide Secondary Transfer Test rather than a bespoke school-set paper. Candidates need a standardised score of 121 or above to qualify for a place — reaching that score qualifies a child for the grammar school pool generally, but as covered above, it does not by itself guarantee a place at this specific, heavily oversubscribed school.

The Secondary Transfer Test itself is weighted unevenly across its three components: Verbal Ability counts for 50% of the overall standardised score, with Non-Verbal Ability and Numerical Ability each contributing 25%. That weighting is worth building a preparation plan around — a child who is numerically strong but verbally weaker is, mathematically, working against half the paper's total weight rather than a third, which is the assumption many families default to when they hear "three equal papers." Leading Tuition's 11+ preparation for Buckinghamshire families is built around this exact weighting, with proportionally more time spent on verbal reasoning than either of the other two components. See our 11+ tuition page for how a personalised programme is structured.

For families who want the fuller step-by-step admissions walkthrough — registration mechanics, the SIF2 residency form, and a month-by-month preparation timeline — our companion Dr Challoner's High School 11+ guide on the blog covers that ground in more depth than fits on this page. This page is deliberately focused on the catchment decision, the disambiguation from the boys' school, and the freshest results and Ofsted data.

Frequently Asked Questions About Dr Challoner's High School 11+ Entry